Dreams about saving a loved one, such as your father, can be quite powerful and often reflect your emotions and concerns regarding your relationship with that person. Here are a few interpretations to consider:

1. Protection and Responsibility: This dream may indicate your desire to protect and support your father. It could symbolize feelings of responsibility you have towards him in waking life, possibly reflecting a need to help him through difficulties or challenges.
2. Fear of Loss: Dreaming of someone drowning can also signify a fear of losing that person or anxiety about their well-being. Your subconscious might be processing worries about your father's health or safety.
3. Symbol of Change: Water often represents emotions and the subconscious. Saving your father from drowning might suggest that you are helping him navigate through emotional turmoil, or it could indicate a desire for change in your relationship dynamics.
4. Personal Growth: This dream might also reflect your own personal struggles. If you feel you are overcoming challenges in your life, saving your father could symbolize your ability to save yourself or others from difficult situations.

Consider how you felt during the dream and your current relationship with your father, as these factors can provide additional context for interpretation. If this dream resonates with you, it may be worth exploring your feelings and any concerns you have regarding your father or your relationship with him.